Deficiency and Weakness

Deficiency noun - A falling short of an essential or desirable amount or number.

Weakness is a synonym for deficiency in defect topic. In some cases you can use "Weakness" instead a noun "Deficiency", when it comes to topics like lack, failing, flaw, imperfection. popular alternative

Nearby Words: deficient, deficit, deficiently

Weakness noun - A defect in character.

Deficiency is a synonym for weakness in defect topic. You can use "Deficiency" instead a noun "Weakness", if it concerns topics such as lack, fault, inadequacy, flaw. popular alternative

Nearby Words: weak, weaken, weakly, weakening, weakling